Update the existing register writes using setbits_le32 and clrbits_le32 in required places.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/spi/sun4i_spi.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/drivers/spi/sun4i_spi.c b/drivers/spi/sun4i_spi.c index 87b396a96e..5446cebe7c 100644 --- a/drivers/spi/sun4i_spi.c +++ b/drivers/spi/sun4i_spi.c @@ -283,20 +283,18 @@ static int sun4i_spi_claim_bus(struct udevice *dev) { struct sun4i_spi_priv *priv = dev_get_priv(dev->parent);
- writel(SUN4I_CTL_ENABLE | SUN4I_CTL_MASTER | SUN4I_CTL_TP | - SUN4I_CTL_CS_MANUAL | SUN4I_CTL_CS_ACTIVE_LOW, - &priv->regs->ctl); + setbits_le32(&priv->regs->ctl, SUN4I_CTL_ENABLE | + SUN4I_CTL_MASTER | SUN4I_CTL_TP | + SUN4I_CTL_CS_MANUAL | SUN4I_CTL_CS_ACTIVE_LOW); + return 0; }
static int sun4i_spi_release_bus(struct udevice *dev) { struct sun4i_spi_priv *priv = dev_get_priv(dev->parent); - u32 reg;
- reg = readl(&priv->regs->ctl); - reg &= ~SUN4I_CTL_ENABLE; - writel(reg, &priv->regs->ctl); + clrbits_le32(&priv->regs->ctl, SUN4I_CTL_ENABLE);
return 0; } @@ -309,7 +307,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen, struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev);
u32 len = bitlen / 8; - u32 reg, rx_fifocnt; + u32 rx_fifocnt; u8 nbytes; int ret;
@@ -324,10 +322,8 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen, if (flags & SPI_XFER_BEGIN) sun4i_spi_set_cs(bus, slave_plat->cs, true);
- reg = readl(&priv->regs->ctl); - /* Reset FIFOs */ - writel(reg | SUN4I_CTL_RF_RST | SUN4I_CTL_TF_RST, &priv->regs->ctl); + setbits_le32(&priv->regs->ctl, SUN4I_CTL_RF_RST | SUN4I_CTL_TF_RST);
while (len) { /* Setup the transfer now... */ @@ -341,8 +337,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen, sun4i_spi_fill_fifo(priv, nbytes);
/* Start the transfer */ - reg = readl(&priv->regs->ctl); - writel(reg | SUN4I_CTL_XCH, &priv->regs->ctl); + setbits_le32(&priv->regs->ctl, SUN4I_CTL_XCH);
/* Wait till RX FIFO to be empty */ ret = readl_poll_timeout(&priv->regs->ctl, rx_fifocnt,